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Harold Hamm & family
1–5%
Harold Hamm & family has given an estimated 1–5% of current net worth ($19.0B), based on Forbes' philanthropy score.
- GiveRate
- 1–5%
- Net worth
- $19.0B
- Stated lifetime giving
- Not stated
- Forbes 400
- #61 · Oil & gas · Oklahoma City, Oklahoma
- Status
- Source-reported range
- Sources
- Forbes 400 profile · Sept. 2026
The math
Forbes philanthropy score 2 of 5: lifetime giving is 1–5% of current net worth. The range is Forbes' own banding; GiveRate shows it as published.
Profile
- Age
- 80
- Residence
- Oklahoma City, Oklahoma
- Industry
- Energy
- Source of wealth
- Oil & gas
- Self-made
- Yes
- Role
- Founder and Chairman Emeritus, Continental Resources
- One-year change
- $16.0B (#64) in Sept. 2025 to $19.0B (#61) in Sept. 2026, a gain of 19%.
What the range means in dollars
Forbes gives Harold Hamm & family a philanthropy score of 2 out of 5, meaning lifetime giving equals 1% to 5% of current net worth. On a $19.0B fortune, that implies lifetime giving of roughly between $190M and $950M. 138 of the 400 share this score, 177 score lower and 68 score higher.
For scale: 1% to 5% of a $50,000 household income would be $500 to $2,500.
Others in Energy
- Lyndal Stephens Greth & family: Not scored · $30.0B
- George Kaiser: 10–20% · $16.5B
- Jeffery Hildebrand: 1–5% · $14.7B
- Robert Pender: Under 1% · $14.3B
- Michael Sabel: Under 1% · $14.3B
- Richard Kinder: 5–10% · $12.9B
Others in Oklahoma
- George Kaiser: 10–20% · $16.5B
- Lynn Schusterman & family: 20%+ · $4.5B
Questions
How much has Harold Hamm & family given to charity?
Forbes scores Harold Hamm & family 2 of 5 for philanthropy, meaning lifetime giving of 1% to 5% of net worth, roughly between $190M and $950M on a $19.0B fortune.
What is Harold Hamm & family's net worth?
Forbes estimates $19.0B as of September 2026, ranking #61 on the Forbes 400.
What is Harold Hamm & family's GiveRate?
1–5%. GiveRate is lifetime giving as a share of wealth, built from published Forbes figures. See giverate.org/methods/ for the method.
GiveRate is an estimate built only from the published figures above. Wealth and giving totals are themselves estimates. See methods. Spot an error? Request a correction. See all Forbes 400 (Sept. 2026) · Open in the interactive rankings · Calculate your own GiveRate